188 STORRS AGRICULTURAL EXPERIMENT STATION. 
TABLE 58. 
Coefficients of digestibility of nutrients in mixed diets. Com- 
parisons of results of actual experiments with those obtained by 
calculating the digestibilities by use of the Jollowing coefficients: 



















Protein. Fat. Carbohydrates. 
Animal foods, - - - - 984 97% 100 % 
Cereals, etc., - : - = 92 BS Mh 90 % 98 & 
Vegetables and fruits, - - - 80% 90 % 95% 
f | PROTEIN. Fat. Seay 
ro i : . ° . be 
E SUBJECT. | Diet. Ee 48 ze 43 ze 22 
| BCE Re | 8 ee | os 
| | BAB | belie sae 
6) Threechem- . 
ists, -| Ordinary mixed diet, - - | 91.1} 91.3/ 96.2| 96.5] 99.2/ 97.2 
10} Laboratory | | Meat, milk, butter, oatmeal, 
janitor,-/ | bread, sugar, - - - | 94.4| 92.8) 96.6) 96.7/ 98.5) 98.2 
11 Laboratory Meat, milk, butter, cheese, 
janitor, - eggs, crackers, bread, sugar, | 95.9 95-0) 97.4| 96.4] 97.9] 98.1 
12} Laboratory Meat, milk, butter, cheese, 
janitor, - eggs, crackers, bread, sugar, | g1.8| 93.7 97-1) 96.3} 98.4| 98.0 
13| Chemist, -| Mixed diet, - - ~ - | 94.9] 93.8) 96.9) 96.6) 98.9) 97.1 
14) Physicist,- Mixed diet, - - - - | 91.3] 91.5|95.9/ 96.3! 97.7/ 97.7 
Avg. Nos. 6, ro, 11, 12, 13, 14,| 93.2 93.0 96.7| 96,5| 98,4! $7.7 
20| Chemist, - Bread and meat, - - - | 93-2! 94.9/ 92.0] 96.0] 97.4) 97.8 
21| Chemist, - Bread and meat, - - - |95-4) 96.0 96.3] 96.3| 96.9/ 98.0 
eo nenist.. = _ Bread, milk, eggs, - - |94-4/ 95.0, 94.8) 96.6) 97.7/ 98.7 
23, Chemist, - Bread, milk, eggs, - - | 95-2) 95.5 93.8] 96.7| 96.8) 98.8 
24| Student, - Bread, milk, eggs, - ~ | 93-6) 96.0) 95.8) 96.9/ 95.7, 98.9 
25| Chemist, -, Bread, milk, eggs, - - | 96.0} 94.4) 94.1] 93.5| 97.8] 98.4 
| Average Nos, 20-25, - . - |94. 95.3 94.5) 96.0 97.1) 98, 
26) Chemist, -| Bread, milk, beef, oatmeal, 
Sugar, bananas, - - | 92.8) 93.5) 96.0] 96.3/ 97.6 97.9 
27| Chemist, -| Bread, milk, beef, oatmeal, . 
| Sugar, bananas, - - | 92.2) 91.1 QI.1/ 96.0) 98,2) 98.0 
28) Chemist, - Bread, milk, beef, oatmeal, 
| sugar, bananas, : - |93-5/ 95-1) 95.7/ 96.8/ 97.0] 98.3 
Average Nos. 26-28, - - | 92,8/ 93.2 94.3) 96.4/ 97.61 98.1 
Average Nos. 20-28, -  - | 94.0/94.6 94.4/96.1 97.2 98.3 
| Average all (15),- - - |93,7/94.0 95.3/96.3/97.7 98.1 
wa eee 

RESULTS OF EXPERIMENTS ON THE PROPORTIONS OF NUTRIENTS 
DIGESTED FROM FOOD MATERIALS BY HEALTHY MEN. 
Lhe results of fifteen experiments are grven above, with figures 
showing the proportions of nutrients digested from ordinary food 
materials by healthy men under conditions practically normal, 
except that the diet was less varied than usual. In each of these 
experiments the coefficients of digestibility of the nutrients were 
found by subtracting the ingredients of the feces from those of the 
Sood, and thus obtaining the proportion digested. Tt seems fair 

